Question: On Full House, why ...

Question: On Full House, why did Uncle Jesse's last name change from Cochran to Katsopolis after the first season? Was any explanation given for this in the show?  Tim, Ann Arbor, Mich.

Televisionary: Jesse (John Stamos) and his parents (John Aprea, Yvonne Wilder) changed their names in the beginning of the 1990-91 season after Jesse's Greek grandparents came to visit. They wanted to honor their heritage, and Stamos himself is Greek.